Question

what is the main aim of classifying elements

Answer 1

Hi mate!

Here is your answer to your question...

The main aim of classifying elements is to follow periodicity based  on the octet configuration. . the elements are arranged in increasing order of their atomic number.
basic property of elements used in the development of modern periodic law:
same physical and chemical elements .
The extreme left side are metals,
The extreme right side are non-metals.
The between are metalloids probably they seems to be right.

I hope this may Help you much...

Yours sincerely,
Samuel.